E-cars aren't entirely polluting, but it is important how you charge them once they're made. Even more important is how you charge 100,000,000 of them 20 years from now. If it's not with nuclear and renewables, then things get dicey.

For decades, utility stocks have been considered secure and reliable investments. Customer electricity demand grows, more kilowatt-hours get sold, utilities profit and investors smile. But that may be about to change.

The legacy of the Macondo disaster continues to hang over Anadarko - America's third-biggest non-integrated independent oil company. But the nightmare hasn't stopped the company from investing in the Gulf of Mexico.

Given the current abundance of shale oil, almost no industry thought leaders are proponents of the peak oil theory. It's now mainly advocated by opportunists looking to gain free media attention by being contrarians to prevailing belief.

The London Array wind power project is now the world's largest offshore wind farm. The fleet of 175 wind turbines stationed in the salty waters of the outer Thames estuary boasts a capacity of 630 megawatts—enough to power nearly half a million homes.

In Cape Town, South Africa, President Obama talked about a new energy plan called "Power Africa," implying that the U.S. government will invest $7 billionto help bring electricity to sub-Saharan Africa.

Grid operators are urging consumers in California to conserve electricity until they can virtually guarantee that there is no risk of a blackout. A team of M.I.T. engineers claim to have created an algorithm capable of providing such guarantees.

International climate-change diplomats, who have had a rough decade, got some potentially exciting news in May when reports emerged that China will consider an absolute cap on carbon emissions in advance of the climate talks scheduled in Paris for 2015.

Over the past few days, the distributed solar sector has secured just shy of $1 billion in third-party financing from Wall Street to support a sustained and likely spectacular future growth in deal flow.

Texas has been an economic powerhouse in recent years. GDP in the Lone Star State, which hit $1.2 trillion before the recession, is now closing in on $1.4 trillion. But in a state built on air conditioning, the Texas power grid is straining to keep up with growth.

A new report from predicts a huge rise in demand for natural gas in the U.S. by 2020. While this will no doubt be used to fuel new strawman fright scenarios, this is nothing but good news for the American public.